Accufab 4.6L / 5.4L / 5.8L Aluminum Block Upgraded Primary Pivot Pins - 8mm

Accufab 4.6L / 5.4L Aluminum Block Upgraded Primary Chain Guide Pins 

These Dowel Pins are designed to replace the OEM 6mm Pins which are known to break. High RPM and Aftermarket Springs add to the Timing Chain Pressure which in turn puts more pressure on the Chain Guides and ultimately the Chain Guide Pins. These Upgraded Pins are machined from Heat Treated Chrome Moly Steel and use M8 x 1.25 threads. 8mm Pin fits all GT500 5.4L and 5.8L Aluminum Blocks and 99 - 01 Cobra, 03 - 04 Mach 1, 05+ 3V applications.